function agrandir(objImage){
		if(objImage.width > objImage.height){
		objImage.style.height = '317px';
		objImage.parentNode.style.height = '319px';
		objImage.style.width = 'auto';
		objImage.parentNode.style.width = 'auto';
		}else{
		objImage.style.width = '280px';
		objImage.parentNode.style.width = '282px';
		objImage.parentNode.parentNode.childNodes[1].style.clear = 'left';
		}

		objImage.parentNode.parentNode.childNodes[1].style.display = 'block';
		objImage.parentNode.parentNode.childNodes[2].style.display = 'block';
	}
	

function retrecir(objImage){
		if(objImage.width > objImage.height){
			objImage.style.height = '80px';
			objImage.parentNode.style.height = '82px';					
		}else{
		objImage.style.width = '120px';
		objImage.parentNode.style.width = '122px';
		}

		objImage.parentNode.parentNode.childNodes[1].style.display = 'none';		
		objImage.parentNode.parentNode.childNodes[2].style.display = 'none';
	}



function grise(){
	
	var ecrire = document.getElementById("disabled").checked;
	var message = document.getElementById("message");
	var textarea = document.getElementById("textarea");

	if(ecrire==false){
		textarea.style.backgroundColor="#CCC";
		message.style.display = "none";
	}else{
		textarea.style.backgroundColor="#FFF";
		message.style.display = "block";
		}
	}